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Plastic envelopes

  • Oct. 4th, 2008 at 8:12 PM

Further to my last post about the letter that came in a plastic envelope (which I chucked in the trash) from Meridian Energy; it turns out that Waveney from My Rubbish Free Year received a similar letter, but being more pro-active than me, she actually wrote Meridian a letter about it, suggesting they rethink their posting method. Meridian's reply indicated that the plastic was corn starch and thus compostable. My understanding of corn starch plastic is that it will degrade in high-temperature compost heap conditions, not in landfill conditions (where I think most of these envelopes will end up):

Bioplastics can take different length of times to totally compost, based on the material and are meant to be composted in a commercial composting facility, where higher composting temperatures can be reached (WorldCentric.org page on bioplastics)

I did what I bet a lot of other people did and put my envelope in the trash bin destined for landfill. After I read Waveney's post I retrieved Meridian's letter from my "recycle" pile and found that they did actually mention the compostable envelope in very small print at the foot of the page:
Printed with mineral oil free, soy based vegetable inks on paper from well-managed forests that comply with environmentally sustainable practice and principles. Please recycle. The plastic sleeve surrounding this pack is made from wood pulp sourced from sustainably managed plantations and is 100% biodegradable.

I'm glad I read Waveney's post, otherwise l'd assume this plastic is the same as any other plastic bag that comes through the letterbox (e.g. the one around Resene's freebie Habitat magazine) and send it to landfill. I'll be interested to see how long it takes to degrade in my compost bin.

Comments

( 1 comment — Leave a comment )
[info]scriptduck wrote:
Oct. 4th, 2008 09:42 am (UTC)
applause
I thought of you and your non-garbage project a zillion times in Italy, especially during our stay at the farm. There is recycling in many places, but our relatives do NOT seem to have entered into garbage-control phase of green living. Yes, most of their food is organically grown on the farm; yes, they compost all food waste (as in: they feed it to the pigs and the dogs and the cats). Yes, they do not over-use electricity or water. BUT they use plastic plates (!), lots of plastic bottles (water, gazzoza). They re-use all glass bottles for the home-made wine and preserves.

I was especially upset with MYSELF as I was not able to separate our own garbage and recycle the few things we bought. I had somewhat troubling contamination issues because of the unsanitary nature of life at The Farm.

Congratulations on the public witness of your project. I am glad to be home and back on track here. As you know, we have really excellent recycling facilities available to us. My brother took a huge bag of polystyrene and a big box of tech parts to a local Enviro-Day. This is something we often do together. xxoo from scriptduck
( 1 comment — Leave a comment )

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